package thread;

public class SyncDemo_3 {
    public static void main(String[] args) {
        Foo f1 = new Foo();
        Foo f2 = new Foo();
        Thread t1 = new Thread(){
            public void run(){
                f1.doSome();
            }
        };
        Thread t2 = new Thread(){
            public void run(){
                f2.doSome();
            }
        };
        t1.start();
        t2.start();
    }
}
class Foo{
    //public synchronized static void doSome(){
    public static void doSome(){
        synchronized (Foo.class){
            try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName()+"正在执行doSome方法...");
            Thread.sleep(5000);
            System.out.println(t.getName()+"：执行doSome完毕！");
            } catch (InterruptedException e) {
            e.printStackTrace();
            }
        }
    }

}
